1304242309 has 8 divisors (see below), whose sum is σ = 1335745880. Its totient is φ = 1273107456.

The previous prime is 1304242307. The next prime is 1304242319. The reversal of 1304242309 is 9032424031.

It can be written as a sum of positive squares in 4 ways, for example, as 253510084 + 1050732225 = 15922^2 + 32415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304242309 - 2¹ = 1304242307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304242307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85014 + ... + 99175.

It is an arithmetic number, because the mean of its divisors is an integer number (166968235).

Almost surely, 2^1304242309 is an apocalyptic number.

It is an amenable number.

1304242309 is a deficient number, since it is larger than the sum of its proper divisors (31503571).

1304242309 is an equidigital number, since it uses as much as digits as its factorization.

1304242309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184359.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1304242309 is about 36114.2950782651. The cubic root of 1304242309 is about 1092.5787801255.

The spelling of 1304242309 in words is "one billion, three hundred four million, two hundred forty-two thousand, three hundred nine".